Tube-sizing mill.



No. 891,650. MPATENTED JUNE 23, 1908."

J. s. WORTH & w. P. HARRISON.

TUBE SIZING MILL.

APPLICATION FILED AUG. 22, 1906.

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No. 891,650. PATENTEQD JUNE 2a, 1908. J. s. WORTH & w. P. HARRISON.

TUBE SIZING MILL.

APPLIOATION FILED AUG. 22, 1906.

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TUBE SIZING MILL. APPLICATION FILED AUG. 22, 1906.

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UNITED STATES PATENT OFFICE.

JOHN S. WORTH AND WILLIAM F. HARRISON, OF COATESVILLE, PENNSYLVANIA, ASSIGNORS TO SAID JOHN S. WORTH AND WILLIAM P. WORTH, OF OOATESVILLE, PENNSYLVANIA.

TUBE-SIZING MILL.

Patented June 23, 1908.

Application filed August 22, 1906. Serial No. 331,596.

To all whom it may concern.

Be it known that we, JoHN S. WORTH and WILLIAM F. HARRISON, citizens of the United States, residing in Coatesville, Pennsylvania, have invented certain Im rovements in Tube-Sizing Mills, of which t e following is a specification.

Our invention relates to certain tube sizing machines used in tubemills for reducing a tube to the proper diameter throughout.

The object of our invention is to provide a machine which can be readily and accurately adjusted, and to also provide means for securely-clamping the rolls to the shaft so that all lost motion will be taken up.

- Referring to the accompanying drawings Figure 1, is a side view of our improved tube sizing machine; Fig. 2, is an end view looking in the direction of the arrow 1, Fig. 1; Fig. 3, is a view looking in the direction of the arrow 2, Fig. 1; and Fig. 4, is a vertical sectional view on the line 4-4, Fig. 2.

A, A are the housings of the machine; B is -the bed plate of the engine mounted on suitable supports b, b and carrying the cylinders b and engine shaft B. On this shaft is a ear wheel I) which meshes with the wheel s carried-by the shafts mounted in the housings A, A. i

' Any suitable type of engine may be used for driving our improved sizing mill. In the present instance we have shown a two cylinder horizontal steam en ine.

C is the lower shaft 0 the mill mounted in suitable boxes 0, 0 carried by the-housings a, a. These boxes are preferably s lit boxes, and are constructed as shown in i s. 2 and 4. The boxes-and the shaft are he d firmly to the housin s, and the shaft is not vertically adjustable in the present instance.

D is the upper shaft mounted in suitable boxes d, all This shaft is vertically adjustable, 'and the boxes are inde endentl adjustable so that the rear end of the shaft can be adjusted independently of the front end.

Carried by the outer end of each shaft 0 and D are rolls 0. and D respectively. These rolls are grooved as illustrated in Fig. 4, to the proper size of the tube to be sized, and the tube is caught between these rolls and reduced to its proper size. In making the rolls we refer to construct them as illustrated in ig. 4, the bod of each roll being made independently o the grooved rim so that the rim can be replaced when necessary.

One object of this invention is to secure the rolls to their shafts in such a manner as to absolutely prevent any lost motion whatever after adjustment is 'made and at the same time allow them to be easily removed; therefore we construct the shafts and the rolls in the following manner: The shaft 0 is reduced at c and has a beveled collar 0 at the inner end forming a-tapered shoulder. The shaft is further reduced at c forming another shoulder 0 and on this reduced portion is a tapered sleeve 0 split longitudinally of the shaft preferably into two or more pieces so that it can close tightly on the shaft without coming together at the split and preferably doweled together. hub of the wheel 0 is bored to fit snuglyover the portion 0', and is countersunk at each end to correspond with the bevel c and the split ring c Back of the ring 0 is a washer c", and on the'threadedportion of the shaft are nuts 0 on turning which the washer is forced against the rin c and the ring is forced into the hub c closing it tightly on the shaft and causing the hub in turn to be forced onto the beveled collar 0 thus any lost motion is entirely taken u by the beveled ortions, and in fact the hu of the roll is hel between the beveled portions of the shoulder and ring so that i the opening in the hub should be greater in diameter than the portion 0 of the shaft the roll will be held rigidly in lace and all lost motion will be taken up. he coupling between the shaft D and the roll D is similar to that just'described in reference to the shaft 0.

The shaft is reduced at d and is provided with a beveled shoulder 67, and is reduced at (1 forming a shoulder (1 and on this reduced portion is a split sleeve (i and back of the sleeve is a washer d held in place by the nuts (1 We referably arrange at the front and back 0 the rolls D and O frames E secured to the housing in any suitable manner and 'carried by these frames are side guides e, e, for directing the tubes to and from the rolls. The guides are vertically and horizontall adjustable, the frames being slotted as we as the guides for the reception of securing bolts. Other means of adjustment may be shown without departing from the essential feature of the invention.

The opening through the In order to pr erly adjust the shaft D we 0 mount screws G G in nuts 9, g in the housings- A A, the screws resting on the upper halves of the boxes (1, d as clearly illustrated in Fig. 4, On the upper end of these screws G, G are beveled gear wheels 9 which mesh with bevel inions g on the cross shaft G havin a hand wheel g so that on turning the han wheel both screws G G will be turned in unison either to lower or raise the boxes, as desired.

Secured to the screw G is a pinion g? which meshes with an elongated gear wheel h secured to a vertical shaft H. This shaft has at its lower end a gear wheel which meshes with a gear wheel '1' on a vertical screw I ada ted to a threaded opening in the lower hal of the box (1. The screws G and I are threaded in the reverse direction in the present instance, one having a right hand thread and the other a left hand thread, so that when the screw G is turned in one direction it will be raised, the other screw being turned so that it will raise the box; when the screw G is turned in the reverse direction it will be forced downward and the lower screw will be turned so as to draw the box down, thus the box is kept confined at all times between the two screws, both screws can be either ri ht or left hand as desired-by insertin an i ler pinion between wheel 9 and whee h or between wheel y' and wheel h or the lower screw can be inverted with the nut forming the lower su ort.

It will be noticed that the nut g in the housing A is secured to the housing by a set screw 91 so that when it is desired to move one s'crew independently of the other, for the purpose of ad ustment or the taking up of 0st motion in the shaft journal m the set screw is turned to release the nut so that it will turn in its box.

By having the elongated gear wheel h the screw can be fed up and down without the pinion g becoming out of mesh with the gear wheel it. By this arrangement any suitable adjustment of the rear end of the shaft can be made to bring the rolls D and O in proper alinement, or for raising or lowering the shaft D for different sizes of rolls.

The box (1 at the forward end of the machine is secured on a bar 70 extending across the machine, and mounted under the bar at each side of the machine, as illustrated in 55 Figs. 1 and 3, are coiled springs K which rest on screw studs is adjustable in the housings A. Thus when the screwG is turned to adjust the forward box, the springs take up any slack. r

It will be seen b the above that the leverage exerted by t e upper shaft when the pressure is between the rolls tends to force the rear end of the shaft downward and to resist this we use the screw 1, the screw G resists the pressure at the forward end, the springs simply keep the box in lace.

We preferably make the sha ts C and D in the manner which we will now proceed to describe.

In order to adjust the shafts longitudinally so as to bring them in alinement and hold them there, we preferably provide sleeves which are adjustably mounted on the shafts and adjust these sleeves against the boxes so as to take up lost motion.

Referring to Fig. 4, the shaft 0 is reduced at n and n, and threaded at n, and on each threaded portion at is a sleeve N which rests against the inner surface of one of the bearing boxes. The sleeves have internal flanges n and their ends la over the central portion of the shaft beyon the reduced portion n so that each sleeve is uided on the two smooth portions of the sha t. After adjustment the sleeves are held in position by set screws n Thusit will be seen that the shaft can be moved longitudinally to any position desired and held rigidly against any lost motion after the sleeves N, N are adjusted and secured in their adjusted osition.

The shaft D 1s reduced at m, M, and has a threaded portion m on which the sleeves M, M are mounted, and each sleeve has an internal flange "72/ and extends over the enlarged portion of the shaft D so that the sleeve will have a bearing on two plain portions of the shaft similar to the sleeve N, and the sleeves are held in the adjusted position by screws n.

We claim: 1. The combination of a shaft, a tapered collar on the shaft, a split sleeve on the shaft,

and means for forcing the split sleeve towards the collar, a roll mounted on the shaft between the sleeve and the collar, and countersunk at each end to the same taper as the tapered collar and tapered sleeve, substantially as described.

2. The combination in a tube sizing mill. of the housings, upper and lower shafts, a sizing 'roll carried on the end of each shaft beyond the housings, bearing boxes for the shafts, two screws, one mounted above and the other mounted below the rear box of the up er shaft, means for connecting the screws an means for turning one 'of said screws so that when one screw is turned the other screw will be turned,'whereb 'the box is vertically adjusted and positive y held in its adjusted position to resist the pressure against the roll of the upper shaft, substantially as described.

3. The combination in adjusting means for the rear end of a shaft, of a housing, upper and lower shafts, a fixed box for the lower shaft, a box movable vertically in the housing adapted to receive the upper shaft,

an adjusting screw bearing upon the upper portion of the box, an adjusting screw adapted to the threaded opening in the lower portion of the box, a vertical shaft, gearing between the vertical shaft and the u per screw, and gearing between the verticals aft and the lower screw so that when the upper screw is turned the lower screw will be turned in unison therewith, whereby the roll shaft can be vertically adjusted and locked rigidly in the osition to which it is adjusted, substantiaily as described.

4. The combination of two housings, a box in each housing, a shaft mounted. in the boxes, said shaft having two threaded ortions near each box, both threaded portlons being between the housin s, a screw sleeve on each threaded portion, t e ends of the said sleeves arranged to bear against the inner side of the boxes, means for locking the screw sleeves in the position to which they are adjusted, so that when the sleeves are turned the shaft can be adjusted longitudinally and the sleeves can be locked in their adjusted osition to prevent longitudinal movement in either direction, substantially as described.

5. The combination of a box, a shaft having a screw threaded ortion and a reduced portion at one side of t e screw threaded portion extending into the box and having a groove on the other side of the threaded portion, an internally threaded sleeve mounted on the screw threaded portion of the shaft and having plain portions at each end, one plain portion being in the form of an internal ange arranged so as to slide upon the lain portion of the shaft, and means on the s eeve adapted to engage the grooved portion so as to secure the sleeve to the shaft after adjustment, substantially as described.

In testimony whereof, we have signed our names to this specification, in the presence of two subscribing witnesses.

JOHN S. WORTH. WILLIAM F. HARRISON.

' Witnesses:

S. G. CooK, WILLIAM S. G. 000K. 

